This lesson plan introduces 6th grade students to the Mayan base-twenty number system. It begins with a review of the base-ten number system. Students will then learn about the Mayan number system through interactive stations, worksheets, and games. They will compare and contrast the base-ten and base-twenty systems. The lesson celebrates cultural diversity by showing different mathematical approaches. Technology such as a SMART board and online polling site are used to engage students and check understanding throughout the lesson.